Talking at Macworld Asia, state-owned Chinese carrier China Unicom claims that Apple's iPhone 5 will run on suppafast HSPA+ networks. It's not LTE, but that's a 3x increase: a maximum download speed of 21Mbps compared to the current 7.2Mbps.

Both AT&T and T-Mobile have HSPA+ networks, so American users would be able to enjoy this speed bump (well, in the case of AT&T, who the hell knows what the speed would be). The same is true in Europe.

It's logical to expect this to be true. We are very close to release now and China Unicom has a close relationship to Apple.